Door and window structures for buildings



2 Sheets-Sheet 1 R. J. HALLE I06 ae DOOR AND WINDOW STRUCTURES FORBUILDINGS Aug. 3, 1965 Original Filed June 22, 1953 Y we N a N 50 V T mm Ell W A HM a e 2. a O n E5 fig: 1 II m u w 3 f S? w a Aug. 3, 1965 R.J. HALLE DOOR AND WINDOW STRUCTURES FOR BUILDINGS Original Filed June22, 1955 2 Sheets-Sheet 2 ROGER J.HALLE, INVENTOR BY M. -u ATTORNEYUnited States Patent 4 Claims. or. 189-46) This application is in part acontinuation of my copending application Serial No. 129,590, filedAugust 7, 1961, for Door Structures for Buildings, now abandoned, and isin remaining part a continuation of my cop-ending application Serial No.129,591, filed August 7, 196-1, for Wi dow Structures for Buildings, nowabandoned, and is therefore a continuation of both said applications.Said applications Serial Nos. 129,590 and 129,591 were respectivelydivisions of my application Serial No. 363,021, filed June 22, 1953, forArt of Building, now abandoned, said application Serial No. 363,021having been copending with said applications Serial Nos. 129,590 and129,591. Said application Serial No. 363,021 was a continuation-in-partof my application Serial No. 100,387, filed June 21, 1949, for Methodsof Building, now abandoned, said application Serial No. 100,387 havingbeen copendin-g with said application Serial No. 363,021.

This invention relates to door, window, or wall-opening frame means inthe art of building and to assemblies of such means. More specifically,the invention relates to a door or window assembly composed ofsub-frames joined together in conjunction with or around frame orstructural elements of a building to form a unitary door, window, orwall-opening frame.

An important object of the invention is to provide an effective meansfor attaching door or window frame assemblies to structural elements ina standardized manner, so that door or window frame assemblies areessentially interchangeable with window or door frame assemblies or wallpanels. It is a further object of the invention that the door or windowframe assemblies may be quickly and readily attached at the site, andwhen the sub-frames are assembled or joined they will cooperate toprovide unitary door or window frames. In the achievement of the aboveobjects, it is also considered important to provide for necessarytolerances, for rapid and easy attachment means and for desiredinsulation and Weather seals.

Examples of the invention are illustrated in the accompanying drawings,wherein:

FIG. 1 is an isometric, exploded view of a door frame, to show itsmanner and direction of assembly and association with columns and otherelements;

FIG. 2 is a vertical section of a typical door frame, with adjacentportions of wall and floor structure, taken on line 2 of FIG. 3;

FIG. 3 is a horizontal section of the door frame shown in FIG. 2, takenon line 3 of FIG. 2;

FIG. 4 is a horizontal section, similar to FIG. 3, of another assembly,illustrating some alternate details and other conditions possible,within the invention;

FIG. 5 is an isometric, exploded view of window frame, to show itsmanner and direction of assembly and association with columns and otherelements;

FIG. 6 is a vertical section of a typical window frame, with adjacentportions of wall and floor structure, taken on line 6 of FIG. 7;

FIG. 7 is a horizontal section of the window frame shown in FIGv 6,taken on line 7 of FIG. 6; and

FIG. 8 is a horizontal section, similar to FIG. 7, of a still furtherassembly, illustrating some alternate details and other conditionspossible within the invention.

, FIG. 1 shows a door frame utilizing the invention. It

3,198,297 Patented Aug. 3, 1965 is composed of two sub-frames 10 and 11,which are applied in the direction of columns 12 and 13 from oppositesides thereof, and when secured thereto form a complete, unitary doorframe. A door can be hung in sub-frame 10, and sub-frame 11 provides thenecessary stops for the door. In assembled position, the complete frame10, 11 is essentially vertically coplanar with and below panels 14 and15, which are shown attached to columns 12- and =13 on respectively thesame sides as door sub-frames 10 and 11. Sub-frames 10 and 11 consist ofhead portions 16 and 1-7 and side portions 18, 19. Since the door frameassembly 10, 1 1 is illustrated as for an interior door, no saddle orweather seals are shown. It is understood, however, that saddles andweather seals can be included in the desig for example as in FIGS. 2 and3, described below.

FIG. 2, in which there is illustrated a vertical section of an assembledframe, shows an exterior sub-frame 20 organized and assembled inconjunction with an interior sub-frame 21 to form a unitary and completedoor frame 20, 21. Exterior sub-frame 20 is essentially composed of afour-sided frame that surrounds a door 22 (shown dotted). The head 23 ofthe sub-frame 20 consists of a horizontal portion 24, with an upstandingflange 25, to which is attached a panel 26 by a bolt, clip or othersuit: able means at 27. It also includes at its outer extremity a shortdownward-facing flange 28, which acts as a water drip. At its innerextremity it also has a downwardfacing flange 29, which abuts the innerdoor frame 21 in a manner so as to make possible an adequate weatherseal.

The frame has two side pieces, one side piece 30 being described belowin connection with the horizontal section shown in FIG. 3. The sidepieces connect the head 23 of the door sub-frame with its sill 3'1.

Sill 31 is composed of an essentially horizontal portion 32, having aslightly outward and downward slope, with an extension 33 to provide forthe shedding of water in an exterior direction clear of the wall of thebuilding. It also has a downward-facing flange 34.whic-h serves toprovide a means for attachment to the panel 35. The sub-frame 20 isatt-ached to the panel 35 by means of bolts, clips or the like at 36. Anupward facing flange 3-7 at the inner extremity of the sill 31 providesa weather seal.

Interior sub-frame 21, as in the case of exterior subframe 20, isessentially composed of a four-sided frame consisting of a head 40, asill 41 and two side pieces, one being side piece 4-2. Head 4-0 consistsof a portion 44- which at its inner extremity, extends perpendicularlydownward and acts as a stop 45 for door 46 (shown dotted). Door stop 45in turn is joined to portion 47, which separates doors 22 and 46. Theextension 48 of portion 47 acts as a stop for door 22. Flange 49,extending upward from portion 47, abuts downward extending flange 29 ofsub-frame 20 to form the aforementioned weather seal. A space at 50provides for erection tolerance. A flange 51 extending upward fromportion 44 serves to provide an attachment means for panel 52, by use ofbolts, clips or the like at 53.

As in sub-frame 20, side piece 42 of sub-frame 21 is described in detailin connection with the horizontal section shown in FIG. 3. It connectsthe head 4-0 or subframe 20 with its sill 41.

Sill 41 consists of forms corresponding with those of head 4-0. Itcontains a portion 55 which slopes downward slightly toward itsextremity 56, thereby more readily accommodating door 46 and makingpassageover the sill easier. It also has a downward extending flange 57,which rests on floor panel 58. Floor surfacing 59 is shown applied onfloor panel 58, which in turn rests on I-bean 60.

In conformity with portion 45 of head 40, the sill 41 contains avertical portion 61 which serves to act as a stop for door 46. It alsocontains a spacing portion 62 that corresponds with portion 47 of thehead, and flange 63 which corresponds with flange 49 of the head.

FIG. 3, which shows a horizontal section at line 3 of FIG. 2, includes,besides sub-frames 2t and 21, an adjacent pair of wall panels 64 and 65,a column 66, attaching means 67 and 68 for securing the panels to thecolumn, and attaching means 69 and 71 which secure the subframe sidepieces 31? and 42 to the column and which correspond to attaching means67 and 63 of the panels.

The configuration of the sides 36 and 42 of sub-frames 26 and 21conforms respectively to the configuration of sub-frame heads 23 and 46.For example, in sub-frame Ztl, portion 71 corresponds with portion 24,and flange 72 corresponds with flange 29. In addition, flange 73 servesto surround and attach sub-frame 2i) to column 66, with attachment bysecuring means indicated at 69.

Similarly, sub-frame 21 contains flange 74, which surrounds and attachessub-frame 21 to column 66. The two sub-frames 2t) and 21 when joinedtogether to the column 66 with suitable gasketing (not shown) form aunitary frame 26), 21. It should be noted that suitable provision forassembly or erection tolerances has been allowed, as indicated by spacesat 75, 76 and 77.

FIG. 4 is a horizontal section similar to FIG. 3, and at its left-handside shows an alternate door frame assembly 86, $1 constituted bysub-frames 36 and S1. The combined, unitary frame $6, 81 is that shownin FIG. 1 as composed of sub-frames 16 and 11. Sub-frames 8i) and 81attach to column 82 and 83 and 84 in like fashion to attachements 69 and70 shown in PEG. 3, and allowance is made for similar tolerances. A stopfor door 85, resulting from sub-frame 81 extending beyond sub-frame 86,is shown at 36. Panels 87 and 88 attach to column 82 is similar mannerto panels 64 and 65 of FIG. 3.

FIG. 4 also shows a door frame 90, 91 at a location perpendicular toanother wall, such as at an exterior wall. A similar condition wouldoccur wherever one wall portion is at right angles to another, andadditional example occurring in the case of an exterior corner (notshown). To attach frame 96, 91 composed of sub-frames 9t) and 91,respective angles 92 and 93, which, if desired, can be verticallycoextensive with the door frame, are attached to the column 82 throughsub-frame 81 and panel 88 by bolts, clips or other suitable attachingmeans at 84 and 94. Sub-frame W consists of a flat portion 5 at theinternal extremity of which a perpendicular portion 96 serves as a stopfor sub-frame 91 as well as for door 97 (shown dotted). Sub-frame 96also includes a flnage 98, which serves to provide an attaching means at99 to join and secure the two sub-frames 9i and 91 together. At itsouter extremity, sub-frame 913 includes a flange 1% which is attached toangle 92 at 161. Sub-frame 91 includes a flat portion 102, which at itsinternal extermity abuts sub-frame 9d at portion 96. It also includes atright angles to portion 162 a flange 163, which corresponds to flange100 of sub-frame 9i). Sub-frame 96- and sub-frame 21 are attached toangles 92 and 93 respectively at 161 and 104. Suitable tolerances areprovided at 165, 166 and 167.

FIG. shows a window frame utilizing the invention. It is composed of twosub-frames 111i and 111, which are applied in the direction of columns112 and 113 from opposite sides thereof, and when joined thereto form acomplete, unitary window frame. To provide adequate weather protectionand seals, window sash and glazing (which for simplicity and clarity arenot shown) are normally mounted in sub-frame 11. while sub-frame 111serves to unite with sub-frame 1116 around columns 112 and 113, and whensecured thereto, to form the unitary window frame assembly 116, 111. Asetting capable of receiving a fixed piece of glass is shown at 114, butit is to be understood that essentially within the confines of the foursides of sub-frame 110 the necessary forms and details can beincorporated to provide for 4 double-hung, horizontal-sliding, casement,pivoted, projected or other types or combinations of types of sashcontaining either single or multiple glazing. It is also to beunderstood that screens can similarly be provided as desired.

In assembled position sub-frames 119 and 111 are essentially verticallyco-planar with and respectively above panels and 116, which are shownattached tocolumns 112 and 113. Sub-frames 111), 111 consistrespectively of head portions 117 and 118, side portions 119 and 12d andsills 121 and 122.

FIG. 6, in which there is illustrated a vertical section of an assembledframe, shows an exterior sub-frame 125 organized and assembled inconjunction with an interior sub-frame 126 to form a unitary andcomplete window frame 125, 126. Window frame 125, 126 is that shown inFIG. 5 as composed of sub-frames 110 and 111. Exterior sub-frame 125 isessentially composed of a foursided frame that surrounds window glazing.The head 127 of frame 125, 126 consists of a horizontal portion 128,with an upstanding flange 129, to which is attached a panel 136 by bolt,clip or other suitable means at 131. Head 127 includes at its outerextremity a downward sloping extension 132 which is capable of sheddingwater, and which includes at its under side a water drip. At its innerextremity it has a downward extension 133 which serves to act as a stopfor fixed glazing 134, which is secured in place by stop 135 as attachedat 136. A horizontal internal extension 137 of portion 133 overlaps andacts as a closure with the horizontally extending portion 139 of thehead 138 of sub-frame 126. The head portion 139 also has an upwardextending flange 140, which provides a means for attachment of closurestrip 141, which in turn extends against ceiling panel 142. Ceilingpanel 142 is attached to an I-bearn 143 of the building frame bysuitable means at 144. Appropriate tolerances providing spacing topermit necessary adjustment in assembly and erection are shown at 145,146, 147, 148 and 149.

Sill 156 of sub-frame 125 corresponds with and is connected to head 127by means of side piece 152. Similarly, sill 151 of sub-frame 126corresponds with and is connected to head 138 by side piece 153. Theside Pieces 152 and 153 are described in detail in connection with thehorizontal section shown in FIG. 7.

Sill 1511 consists of an essentially horizontal, slightly downward andoutward sloping portion 155 terminating at its outer extremity in anextending portion 156 capable of shedding water outside the walls of thebuilding. It also includes a downward-facing flange 157 shown attachedto panel 158 by bolt, clip or other attaching means at 159. At the innerextremity of portion 155, an upward extending flange 160 serves to actas a stop for window glazing 134, which is attached by stop 162. Stop162 corresponds to stop 136 of head 127, and is secured by suitablemeans at 163. Extension 164 of portion 160 overlays the inner sill 151to provide a suitable closure.

Sill 151 is composed of a horizontal element 165 with downward extendingflange 166 attached to a panel 167 below it by bolt, clip or othersuitable means at 168.

FIG. 7, which shows a horizontal section at line 7 of FIG. 6, includes,besides sub-frames 125 and 126, a pair of adjacent wall panels 170 and171 and attaching means 172, 173, 174 and 175 for securing the framesand panels to the building column 176. The configuration of the sidepieces 152 and 153 of sub-frames 125 and 126 conforms respectively tothe configuration of the heads 127 and 138 of sub-frames 125 and 126.Thus, specifically, portion 177 conforms with portion 128; portion 178with portion 133; portion 179 with portion 137. Glazing stop 180 isshown attached to sub-frame 125 at 181. Suitable tolerance is shown at183, 184, and 186.

FIG. 8 is a horizontal section similar to FIG. 7, and at its left-handside shows an alternate window frame assembly 1%, 191 constituted bysub-frames and 191. Sub-frames 1% and 191 are attached to column 192 at193 and 194 in a similar manner to that shown in FIG. 7 in connectionwith column 176 and similar allowance is made for tolerances. A casementor projected type sash with glazing is shown at 195, with conformingstep-like configuration in sub-frame 190 at 196, fitting the flangedstructure of the sash frame 195.

While exterior sub-frame 190 contains the window sash 195, interiorsub-frame 191 serves to complete the unitary frame 190, 191 aroundcolumn 192, with closure effected through the flange overlap at the sidepieces of the subframes at 197. Suitable tolerance is shown as in FIG.7. Standard wall panels are shown at 193 and 199.

FIG. 8 also shows a window frame 200, 201 in a location perpendicular toanother wall, the example illustrated indicating an exterior wallcondition. A similar condition would occur wherever one wall portion iat right angles to another, an additional example existing in the caseof a simple outside corner (not shown). To attach the frame 200, 201composed of sub-frames 200 and 201, respective angles 202 and 203 areattached to column 192 respectively through sub-frame 190 and panel 198by bolts, clips or other suitable attaching means at 194 and 204.Sliding or double-hung glazed sash 205 and 206 are accommodated at sidepiece 207 of exterior sub-frame 200 by means of conformingconfiguration, such as the vertical trackways shown. A frame containingscreening is shown at 208. Side piece 207 also includes a flange 209which is attached at 210 to angle 202, which, if desired, can bevertically coextensive with the window frame. Side piece 211 of interiorsub-frame 201 is attached to similar angle 203 at 212. Side pieces 207and 211 include flange extensions which overlap and can be attached at213 to join the sub-frames 200 and 201 into the complete, unitary windowframe assembly 200, 201.

While various examples and conditions have been shown, it is to beunderstood that the invention is not limited to the specific forms orconditions herein illustreated and described, but may be carried out inother ways and with other details without departure from the principlesof the invention. In addition, while, for simplicity, no gasketing,weather-stripping or window or door hardware has been shown, it is to beunderstood that these can be included in conventional manner. Similarly,in windows, other types of sash can be accommodated; or sash can beomitted, or in door frames, doors can be omitted, so that frames becomemerely wall-opening frames without sash or glazing or doors, withdetails modified as may be desired. Also, the frames indicated may beenlarged or otherwise modified to include alternate details, such asthose for single or double standard-hinged, horizontal-sliding,double-acting, pivoted, pin-jointed or projected doors or for revolvingdoors.

I claim:

1. In a building, in combination with a pair of spaced columns which arealigned in a wall assembly of the building and which have an identicalsquare enveloping contour in cross-section, each column being disposedwith opposite faces thereof at respectively opposite sides of the wallassembly, a door frame composed of two prefabricated, substantiallycongruent, unitary sub-frames applied to opposite sides of the aforesaidcolumns, said sub-frames each having vertical sides respectively alongthe columns and a portion at the top of the vertical sides extendingbetween the columns, to define a door opening, said sub-frames beingmutually dimensioned and fitting together, inwardly of the opening, toform said door frame and to constitute it as a door-receiving form, eachof said sub-frames having structure which faces the opening along bothsides and the top, the opening-facing structure of one sub-frameincluding a portion which overlaps a portion of the opening-facingstructure of the other sub-frame, said portions being shaped so thatthey may be brought into said overlapping relation upon insertion ofsaid subframes between the columns from respectively opposite sides ofthe Wall assembly, at least of the vertical sides one of said sub-framesincluding structure extending inwardly of the opening to constitute aclosure abutment for a door hung in the assembled door frame, each ofsaid sub-frames having vertical flanges along both of its vertical sidesdisposed to be parallel with said. wall assembly and arranged inflatwise overlapping abutment on the adjacent one of the aforesaid facesof the adjacent column, each of said flanges being dimensioned tooverlap said adjacent column face by a distance equal to about one-halfthe width of said column face, said subframes being secured to thecolumns in assembled relation of the door frame, and at least one wallpanel joined to one of the columns and having a flat portion overlappingone of the said faces of said last-mentioned column by about half thewidth thereof, said panel extending in the plane of the wall assemblyadjacent said last-mentioned column face, in a direction away from thecolumn on the other side thereof from the door frame, said overlappingpanel portion and the adjoining vertical flange of one of the sub-framesbeing aranged so that neither overlaps the other and so that theytogether substantially cover said last-mentioned column face, and beingshaped and dimensioned for each to cover only one-half of the width ofthe column face, in a manner characteristic of interchangeability ofsuch panel and such door sub-frame in respect to the attachment of suchpanels and door frames to columns.

2. In a building, the combination as defined in claim 1, which includesa second wall panel also joined to the column to which the first panelis joined and having a flat portion overlapping the opposite face ofsaid lastmentioned column by about half the Width thereof, said secondwall panel extending in the plane of the wall assembly adjacent saidlast-mentioned opposite column face in a direction away from the columnon the other side thereof from the door frame, and said overlappingportion of the second panel and the adjoining vertical flange of one ofthe sub-frames being arranged so that neither overlaps the other and sothat they together substantially cover said last-mentioned oppositecolumn face, and being shaped and dimensioned for each to cover onlyone-half of the width of the said opposite column face, in a mannercharacteristic of interchangeability of such panel and such doorsub-frame in respect to the attachment of such panels and door frames tocolumns.

3. In a building, in combination with a pair of spaced columns which arealigned in a wall assembly of the building and which have an identicalsquare enveloping contour in cross-section, each column being disposedwith opposite faces thereof at respectively opposite sides of the wallassembly, a window frame composed of two pie-fabricated unitary,substantially congruent, openingdefining frame portions shaped to adjointhe columns and extend across the space between them and dimensioned andarranged in mutually fitting engagement to constitute the aforesaidwindow frame, said frame portions being respectively insertable betweenthe columns on opposite sides of the wall assembly and being secured tothe columns in assembled relation of the window frame, each frameportion having vertical sides respectively along the columns andportions respectively at the top and bottom extending between thecolumns, said vertical sides of one of the frame portions being arrangedto overlap the corresponding vertical sides of the other frame portionand being shaped so that said .frame portions may be brought into saidoverlapping relation upon insertion of said frame portions between thecolumns from opposite sides of the wall assembly, each of said frameportions having vertical flanges along both of its vertical sidesdisposed to be parallel wtih said wall assembly and arranged at flatwiseoverlapping abutment on the adjacent one of the aforesaid faces of theadjacent column, each of said flanges being dimensioned to overlap saidadjacent column face by a distance equal to about onehalf the width ofsaid column face, and at least one Wall panel joined to one of thecolumns and having a flat portion overlapping one of the said faces ofthe lastrnentioned column by about half the Width thereof, said panelextending in the plane of the Wall assembly adjacent said last-mentionedcolumn face in a direction away from the column on the other sidethereof from the Window frame, said overlapping panel portion and theadjoining vertical fiange of one of the frame portions being arranged sothat neither overlaps the other and so that they together substantiallycover said last-mentioned column face, and being shaped and dimensionedfor each to cover only one-half of the width of the column face, in amanner characteristic of interchangeability of such panel and Windowframe portion in respect to the attachment of such panels and windowframes to columns.

4. In a building, the combination as defined jlT'ClZlliiL 3, whichincludes a second wall panel also joined to the column to which thefirst wall panel is joined and having a fiat portion overlapping theopposite face of said lastmentioned column by about half/the widththereof, said second Wall panel extending in the plane of the wallassembly adjacent said last-mentioned opposite column face in adirection away from the column on the other side thereof from the windowframe, and said overlapping portion of the second panel and theadjoining vertical flange of one of the frame portions being arranged sothat neither overlaps the other and so that they together substantiallycover said last-mentioned opposite column 8 face, and being shaped anddimensioned-for each to cover only one-half of the Width of the saidopposite column face, in a manner characteristic of interchangeabilityof such panel and window frame portion in respect to the attachment ofsuch panels and Window frames to columns.

References Cited by the Examiner UNITED STATES PATENTS 1,995,764 3/35Bohnsack 189-46 2,454,523 11/46 Philip 2011 References Elites by theApplicant UNITED STATES PATENTS 1,948,662 2/34 Tracy.

2,293,648 8/42 Horn.

2,454,523 11/48 Philip.

2,582,765 1/52 Brew.

2,728,956 1/56 Jackson.

2,742,602 4/ 56 Tolman.

FOREIGN PATENTS 57,077 3/44 Netherlands. 60,343 12/47 Netherlands.

CHARLES E. OCONNELL, Primary Examiner.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No,5,198,297 August 3, 1965 Roger J" Halle It is hereby certified thaterror appears in the above numbered patent requiring correction and thatthe said Letters Patent should read as corrected below.

Column 2, 1111a 69, for "I -bean" read I beam column 3, line 30, for"and 83" read at 83 line 31, for "attachements" read attachments line35, for "is" read in line 39, for "and" read 7 an 11.ne 48, for "flnage"read flange column 6, line 30, after "first" insert e wall line 69, for"wtih" read T with column 8, llne 21, for "2, 42,602" read 1 2, 42,117 rS1gned and sealed this 28th day of June 1966K (SEAL) Attest:

ERNEST W. SWIDER EDWARD J. BRENNER Attesting Officer Commissioner ofPatents

1. IN A BUILDING, IN COMBINATION WITH A PAIR OF SPACED COLUMNS WHICH AREALIGNED IN A WALL ASSEMBLY OF THE BUILDING AND WHICH HAVE AN IDENTICALSQUARE ENVELOPING CONTOUR IN CROSS-SECTION, EACH COLUMN BEING DISPOSEDWITH OPPOSITE FACES THEREOF AT RESPECTIVELY OPPOSITE SIDES OF THE WALLASSEMBLY, A DOOR FRAME COMPOSED OF TWO PREFABRICATED, SUBSTANTIALLYCONGRUENT, UNITARY SUB-FRAMES APPLIED TO OPPOSITE SIDES OF THE AFORESAIDCOLUMNS, SAID SUB-FRAMES EACH HAVING VERTICAL SIDES RESPECTIVELY ALONGTHE COLUMNS AND A PORTION AT THE TOP OF THE VERTICAL SIDES EXTENDINGBETWEEN THE COLUMNS, TO DEFINE A DOOR OPENING, SAID SUB-FRAMES BEINGMUTUALLY DIMENSIONED AND FITTING TOGETHER, INWARDLY OF THE OPENING, TOFORM SAID DOOR FRAME AND TO CONSTITUTE IT AS A DOOR-RECEIVING FORM, EACHOF SAID SUB-FRAMES HAVING STRUCTURE WHICH FACES THE OPENING ALONG BOTHSIDES AND THE TOP, THE OPENING-FACING STRUCTURE OF ONE SUB-FRAMEINCLUDING A PORTION WHICH OVERLAPS A PORTION OF THE OPENING-FACINGSTRUCTURE OF THE OTHER SUB-FRAME, SAID PORTIONS BEING SHAPED SO THATTHEY MAY BE BROUGHT INTO SAID OVERLAPPING RELATION UPON INSERTION OFSAID SUBFRAMES BETWEEN THE COLUMNS FROM RESPECTIVELY OPPOSITE SIDES OFTHE WALL ASSEMBLY, AT LEAST ONE OF SAID SUB-FRAMES INCLUDING STRUCTUREEXTENDING INWARDLY OF THE OPENING TO CONSTITUTE A CLOSURE ABUTMENT FOR ADOOR HUNG IN THE ASSEMBLED DOOR FRAME, EACH OF SAID SUB-FRAMES HAVINGVERTICAL FLANGES ALONG BOTH OF ITS VERTICAL SIDES DISPOSEAD TO BEPARALLEL WITH SAID WALL ASSEMBLY AND ARRANGED IN FLATWISE OVERLAPPINGABUTMENT ON THE ADJACENT ONE OF THE AFORESAID FACES OF THE ADJACENTCOLUMN, EACH OF SAID FLANGES BEING DIMENSIONED TO OVERLAP SAID ADJACENTCOLUMN FACE BY A DISTANCE EQUAL TO ABOUT ONE-HALF THE WIDTH OF SAIDCOLUMN FACE, SAID SUBFRAMES BEING SECURED TO THE COLUMNS IN ASSEMBLEDRELATION OF THE DOOR FRAME, AND AT LEAST ONE WALL PANEL JOINED TO ONE OFTHE COLUMNS AND HAVING A FLAT PORTION OVERLAPPING ONE OF THE SAID FACESOF SAID LAST-MENTIONED COLUMN BY ABOUT HALF THE WIDTH THEREOF, SAIDPANEL EXTENDING IN THE PLANE OF THE WALL ASSEMBLY ADJACENT SAIDLAST-MENTIONED COLUMN FACE, IN A DIRECTION AWAY FROM THE COLUMN ON THEOTHER SIDE THEREOF FROM THE DOOR FRAME, SAID OVERLAPPING PANEL PORTIONAND THE ADJOINING VERTICAL FLANGE OF ONE OF THE SUB-FRAMES BEINGARRANGED SO THAT NEITHER OVERLAPS THE OTHER AND SO THAT THEY TOGETHERSUBSTANTIALLY COVER SAID LAST-MENTIONED COLUMN FACE, AND BEING SHAPEDAND DIMENSIONED FOR EACH TO COVER ONLY ONE-HALF OF THE WIDTH OF THECOLUMN FACE, IN A MANNER CHARACTERISTIC OF INTERCHANGEABILITY OF SUCHPANEL AND SUCH DOOR SUB-FRAME IN RESPECT TO THE ATTACHMENT OF SUCHPANELS AND DOOR FRAMES TO COLUMNS.